<http://webisa.webdatacommons.org/prov/464377820>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/168442054> .
<http://webisa.webdatacommons.org/168442054>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<faqs.org> .
<http://webisa.webdatacommons.org/168442054>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/prov/130980806>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/168442054> .
<http://webisa.webdatacommons.org/168442054>	<http://www.w3.org/ns/prov#value>	"R1 is an amino protecting group and X is halogen with acetic acid" .